Oxygen and seed germination

Mike Rummerfield mikerumm@gmail.com
Sat, 07 Dec 2019 12:23:21 PST
Re: [pbs] Oxygen and seed germination (but this is not about just
germination, per se)

Before retiring, gardening was my vocation and avocation (the avocation
continues).
It has been my experience  and very unscientific observation that plants of
all types respond positively to rain.  When I place plants out in the rain,
they very quickly and unambiguously appear darker green, more turgid, and
overall healthier looking, and "happier" ( not exactly an
objective scientific assessment).   It also frequently generates a surge in
growth.

These results occur even if I've been giving the plant what I consider
optimal care, and appear otherwise healthy.  This applies to plants that
have been protected by any measure from rain, particularly if the plant has
been in an enclosed space, e.g indoors.  I haven't observed the same
obvious results using collected and stored rainwater.  I've
attributed this, in my own idiosyncratic way, to both increased available
oxygen in the rainwater, and the time frame of slow, even percolation.

Agreed--- all totally unscientific, but it has been my observation and
assessment, barring any other unknown or unobserved influences.

I've had more limited experience with germination/rainwater.  However,
there have been times I've become so frustrated with a recalcitrant seed
batch not germinating, that I put the whole thing out in gentle rain
(temperature permitting) and ....Presto!  ......... germination within a
few days.  Coincidence?  Perhaps.  And, of course, not every time.

For what it's worth,
Mike
cool, Mediterranean climate, US


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